Evaluation of sub-microsecond recovery resonators for in vivo electron paramagnetic resonance imaging

Fuminori Hyodo, S. Subramanian, N. Devasahayam, R. Murugesan, K. Matsumoto, J. B. Mitchell, M. C. Krishna

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    Time-domain (TD) electron paramagnetic resonance (EPR) imaging at 300 MHz for in vivo applications requires resonators with recovery times less than 1 μs after pulsed excitation to reliably capture the rapidly decaying free induction decay (FID). In this study, we tested the suitability of the Litz foil coil resonator (LCR), commonly used in MRI, for in vivo EPR/EPRI applications in the TD mode and compared with parallel coil resonator (PCR). In TD mode, the sensitivity of LCR was lower than that of the PCR. However, in continuous wave (CW) mode, the LCR showed better sensitivity. The RF homogeneity was similar in both the resonators. The axis of the RF magnetic field is transverse to the cylindrical axis of the LCR, making the resonator and the magnet co-axial. Therefore, the loading of animals, and placing of the anesthesia nose cone and temperature monitors was more convenient in the LCR compared to the PCR whose axis is perpendicular to the magnet axis.

    Original languageEnglish
    Pages (from-to)248-254
    Number of pages7
    JournalJournal of Magnetic Resonance
    Volume190
    Issue number2
    DOIs
    Publication statusPublished - Feb 1 2008

    Fingerprint

    Electron Spin Resonance Spectroscopy
    Paramagnetic resonance
    Resonators
    electron paramagnetic resonance
    resonators
    recovery
    Imaging techniques
    Recovery
    Magnets
    evaluation
    coils
    Metal foil
    foils
    Magnetic Fields
    Nose
    Anesthesia
    Temperature
    magnets
    Nose cones
    nose cones

    All Science Journal Classification (ASJC) codes

    • Biophysics
    • Biochemistry
    • Nuclear and High Energy Physics
    • Condensed Matter Physics

    Cite this

    Hyodo, F., Subramanian, S., Devasahayam, N., Murugesan, R., Matsumoto, K., Mitchell, J. B., & Krishna, M. C. (2008). Evaluation of sub-microsecond recovery resonators for in vivo electron paramagnetic resonance imaging. Journal of Magnetic Resonance, 190(2), 248-254. https://doi.org/10.1016/j.jmr.2007.11.004

    Evaluation of sub-microsecond recovery resonators for in vivo electron paramagnetic resonance imaging. / Hyodo, Fuminori; Subramanian, S.; Devasahayam, N.; Murugesan, R.; Matsumoto, K.; Mitchell, J. B.; Krishna, M. C.

    In: Journal of Magnetic Resonance, Vol. 190, No. 2, 01.02.2008, p. 248-254.

    Research output: Contribution to journalArticle

    Hyodo, F, Subramanian, S, Devasahayam, N, Murugesan, R, Matsumoto, K, Mitchell, JB & Krishna, MC 2008, 'Evaluation of sub-microsecond recovery resonators for in vivo electron paramagnetic resonance imaging', Journal of Magnetic Resonance, vol. 190, no. 2, pp. 248-254. https://doi.org/10.1016/j.jmr.2007.11.004
    Hyodo F, Subramanian S, Devasahayam N, Murugesan R, Matsumoto K, Mitchell JB et al. Evaluation of sub-microsecond recovery resonators for in vivo electron paramagnetic resonance imaging. Journal of Magnetic Resonance. 2008 Feb 1;190(2):248-254. https://doi.org/10.1016/j.jmr.2007.11.004
    Hyodo, Fuminori ; Subramanian, S. ; Devasahayam, N. ; Murugesan, R. ; Matsumoto, K. ; Mitchell, J. B. ; Krishna, M. C. / Evaluation of sub-microsecond recovery resonators for in vivo electron paramagnetic resonance imaging. In: Journal of Magnetic Resonance. 2008 ; Vol. 190, No. 2. pp. 248-254.
    @article{dd26ddcfa3a34a1eba4ebe808f7a0cce,
    title = "Evaluation of sub-microsecond recovery resonators for in vivo electron paramagnetic resonance imaging",
    abstract = "Time-domain (TD) electron paramagnetic resonance (EPR) imaging at 300 MHz for in vivo applications requires resonators with recovery times less than 1 μs after pulsed excitation to reliably capture the rapidly decaying free induction decay (FID). In this study, we tested the suitability of the Litz foil coil resonator (LCR), commonly used in MRI, for in vivo EPR/EPRI applications in the TD mode and compared with parallel coil resonator (PCR). In TD mode, the sensitivity of LCR was lower than that of the PCR. However, in continuous wave (CW) mode, the LCR showed better sensitivity. The RF homogeneity was similar in both the resonators. The axis of the RF magnetic field is transverse to the cylindrical axis of the LCR, making the resonator and the magnet co-axial. Therefore, the loading of animals, and placing of the anesthesia nose cone and temperature monitors was more convenient in the LCR compared to the PCR whose axis is perpendicular to the magnet axis.",
    author = "Fuminori Hyodo and S. Subramanian and N. Devasahayam and R. Murugesan and K. Matsumoto and Mitchell, {J. B.} and Krishna, {M. C.}",
    year = "2008",
    month = "2",
    day = "1",
    doi = "10.1016/j.jmr.2007.11.004",
    language = "English",
    volume = "190",
    pages = "248--254",
    journal = "Journal of Magnetic Resonance",
    issn = "1090-7807",
    publisher = "Academic Press Inc.",
    number = "2",

    }

    TY - JOUR

    T1 - Evaluation of sub-microsecond recovery resonators for in vivo electron paramagnetic resonance imaging

    AU - Hyodo, Fuminori

    AU - Subramanian, S.

    AU - Devasahayam, N.

    AU - Murugesan, R.

    AU - Matsumoto, K.

    AU - Mitchell, J. B.

    AU - Krishna, M. C.

    PY - 2008/2/1

    Y1 - 2008/2/1

    N2 - Time-domain (TD) electron paramagnetic resonance (EPR) imaging at 300 MHz for in vivo applications requires resonators with recovery times less than 1 μs after pulsed excitation to reliably capture the rapidly decaying free induction decay (FID). In this study, we tested the suitability of the Litz foil coil resonator (LCR), commonly used in MRI, for in vivo EPR/EPRI applications in the TD mode and compared with parallel coil resonator (PCR). In TD mode, the sensitivity of LCR was lower than that of the PCR. However, in continuous wave (CW) mode, the LCR showed better sensitivity. The RF homogeneity was similar in both the resonators. The axis of the RF magnetic field is transverse to the cylindrical axis of the LCR, making the resonator and the magnet co-axial. Therefore, the loading of animals, and placing of the anesthesia nose cone and temperature monitors was more convenient in the LCR compared to the PCR whose axis is perpendicular to the magnet axis.

    AB - Time-domain (TD) electron paramagnetic resonance (EPR) imaging at 300 MHz for in vivo applications requires resonators with recovery times less than 1 μs after pulsed excitation to reliably capture the rapidly decaying free induction decay (FID). In this study, we tested the suitability of the Litz foil coil resonator (LCR), commonly used in MRI, for in vivo EPR/EPRI applications in the TD mode and compared with parallel coil resonator (PCR). In TD mode, the sensitivity of LCR was lower than that of the PCR. However, in continuous wave (CW) mode, the LCR showed better sensitivity. The RF homogeneity was similar in both the resonators. The axis of the RF magnetic field is transverse to the cylindrical axis of the LCR, making the resonator and the magnet co-axial. Therefore, the loading of animals, and placing of the anesthesia nose cone and temperature monitors was more convenient in the LCR compared to the PCR whose axis is perpendicular to the magnet axis.

    UR - http://www.scopus.com/inward/record.url?scp=38149097674&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=38149097674&partnerID=8YFLogxK

    U2 - 10.1016/j.jmr.2007.11.004

    DO - 10.1016/j.jmr.2007.11.004

    M3 - Article

    C2 - 18042414

    AN - SCOPUS:38149097674

    VL - 190

    SP - 248

    EP - 254

    JO - Journal of Magnetic Resonance

    JF - Journal of Magnetic Resonance

    SN - 1090-7807

    IS - 2

    ER -